I am pulling the motor in my 79 elky. does anyone have any advise on what should be changed while I have it out? It is a 305 and has over 200000 miles on it I think I have rolled it over once and Ive only had it since Jan. I have blown the freeze plug under the motor mount on the pass side. so the easiest thing I figure is to pull the motor and change them all. I also plan on changing the rear seal and oil pan gaskets as well as the valve cover gaskets and possily ne3w valve covers. any other suggestions?